Rotary grader and separator



June 26, R BRYAN ROTARY GRADER AND SEPARATOR Filed Jan. 13, 1945 4 Sheets-Sheet 1 Inventor Ben/Z" June 26,1945. B, R, BRYAN 2,378,896 1 ROTARY GRADER AND SEPARATOR Filed Jan. 13, 1945 4 Sheets-Sheet 2 Inventor ,Beififigan M M ,1 WW I6 [I tor/e).

June 26, R BRYAN ROTARY GRADER ANDVSEPARATOR Filed Jan. 13, 1943 4 Sheets-Sheet 3 I q Q G s I 9 N w \1 w Inventor 1 El 7533 70 B June 26, 1945. R, BRYAN 2,378,896

ROTARY GRADER AND SEPARATOR Filed Jan, 13, 1943 i0 o o o Inventor B MZ 4 Sheets-Sheet 4 ure 1.

supporting a hopper 9.

Patented June 26, 1945 h h 2,378,896 ROTARY GRADERAND serene-roe Bent R. Bryan, Nephi, assignor of ten per V p K c nt to Lisle B l n liiephi Utah I Application January 13, 1943; Serial No.j 472,260-; v

This invention relates to new and useful improvements in graders andseparatorsand more a particularly to an apparatus especially adapted for grading and separating grains, gravel and other material, while at the sametime cleaning the'same. The principal object of the present invention is to provide 'a simple and inexpensive apparatus for separating and grading materials with but a minimum amount of human attention.

Other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings: Figure 1 represents a side elevational view of the apparatus.

Figure 2 is a rear elevational view of the apparatus.

Figure 3 is a sectional view on the line 3-3 of Figure 1.

Figure 4 is a section on the line 4-4 of Fig- Figure 5 is a top plan view of the hopper. 7 Referring to the drawings wherein like numerals designate like parts, it can be seen that the apparatus includes a base 5 from which rises a frame generally referred to by numeral 6 and which consists of four corner posts 1 having bridge members at the upper ends thereof for Under each of the bridge members 8 is a cross member I II and between the same are rolls lljand l2. These rolls I2 have their end portions disposed in bearing blocks l2 in each side of the frame 6, and these bearing blocks are normally urged apart by compression springs l3. A threaded member or screw shaft I4 is employed for each of the bearing blocks II in order that the bearing blocks H can be adjusted with respect to the bearing blocks l2 and thus regulate the space between the rolls I l2.

Each of the rolls I2 has acircumferential groove |5 for receiving one end 01; a corresponding arm I6, these arms being suitably secured to certain of the posts 1. These'arms l8 prevent a longitudinal movement of the rolls.

A pulley is provided at one end of the roll II to permit rotation of the roll while the other roll I2 is driven by a pulley l8.

A paddlewheel fan I9 is mounted. by a shaft on brackets 2| supported by certain of the posts I and this wheel is driven by a pulley 22. This wheel is located at an offset position under the rolls I2 so as to blow away looseparticles Of material.

20am; roieoa-uzfyffl. y.

1 At a substantial distance under the roll I, I2

is a second hopper 23 which'is supported at one end by a bracket 24*scured to thetop of a bear- Q relation to the shaft 33.

ing assembly 25. Risers 29 are secured to the beams 30towhich the lower endsfof a mayor arms 29' are pivoted asat 29""; The shank portion 26 of screw eyes 26 project laterally outwardly from the respective arm 29 for receiving the adjusting screws 21 threaded through brackets 28 extending upwardly from the risers 29. A nut 3| is threaded on eachscrew against the brackets to regulatethe tension of a coil spring 32 interposed between the bracket and the screw eyes. A shaft 33 is journaled in the arms 29 beneath the hopper 23 and is rotated by ulley 25 on one end of the shaft. A stationary shaft 34 is supported in the risers 29 in spaced parallel The shaft 33 is adjusted relative to the shaft 34. through the medium of the screws 21. The stationary shaft 34 has circumferential grooves 36 so as topass all material.

The beam 30 are hingedly secured at their lower ends as at 31 to one end of the base 5 and are bridged adjacent their lower ends by a bearing assembly 38.

Three shafts, namely, shafts 39, 40 and 4| have their upper and lower ends disposed through the bearing assemblies 25, 38 and as can be seen in 'Figure 3, the intermediate roll 40 has circumferential grooves 42 material. I

It is preferable that the lower end of the roll 40 therein for passin coarse terminate in a block 43, while the lower ends of the rolls 39, and 4| are reduced and disposed through bearing blocks 44, 45 slidably mounted in a the assembly 38, these blocks being held apart by compression springs 46 and adapted to be brought together by threaded shafts 41, 48, respectively,

feedable through the ends of the assembly 38. The assembly 38is held to the beams 30 by suitable clampunits 49.

The upper ends of the rolls 39,4| are disposed likewise through bearing blocks 44a, 45a. slid-f ably mounted in the upper bearing assembly 25.

The blocks 44a and 45a are held apart by a com- 5 pression spring 46a, but can be brought to ether a by adjusting screws or'screw shafts 41a, 41a.

The assembly 25 is held on the beams 30 by suitable clamps 49a.

The rolls 39, 4| are geared together by gears 50, 5| and the roll 4| at its upper end is equipped with a drive pulley 52. As can be seen in Figure 3, the intermediate roll 40 is stationary and has 5" its upper end supported in a block 43a onthe assembly 25.

' the beams 30.

Numeral 55 denotes means for adjusting the beams 30 and the structure supported thereon, and this consists of a threaded member 56 pivotally secured at its lower end to the base and a threaded pivotal member 51 depending from a cross connecting member 58 on the beams 30.

These members 56, 51 are threadedly disposed I through the end portions of a hand rotatable frame 59 and this structure goes together to form a turnbuekicauiilstment for eivatm eor 1am:

Obviously, it is the intention that the fine ma terial will pass between the rollsdhrpughouttheir entire lengths while the coarse material will pass h the grooves 42, Y p v It may be found desirable that therollsrvolv very slowly so as to llIlifOlHllYydiStlliblH" the wear v evenly on the rolls and also to assist in maintaining a continuous flow of the material; Furrramew 1. A grader and separator apparatus including an upper hopper having spaced parallel feeding rolls thereunder and a blower mounted below and toward one side of the rolls adapted to subject material passing through the rolls to a draftof air for removing light material, a catch hopper under the feeding rolls, distributing rolls under the second-mentioned hopper, inclined rolls under the second-mentioned rolls said inclined rolls being disposed spaced p'arallel relagtion to each other toprovid'e' a grading slot therbetween,

,means for rotating the last-mentioned rolls, a pivoted frame supporting said patch hopper and 53112151 second-1- and third-mentioned rolls, and

means for vertically adjusting one end of said 2". A-gr'ader and separator apparatus includingnnupper-lwpmr having spaced parallel feeding rolls thereunder and a blower mounted below and tovfard one side of the rolls adapted to subject material passing through the rolls to a draft of air for removinglight'material,'a catch hopper under the. 7 f ceding: rolls, distributing rolls-under the second-mentioned} hopper, 'inclinedlfrolls trzthsverselyv under the separating; rollslsaid. in; cli ried rolls being disposed in 's'pacedparall'lreign tionto each other. to provide a-grading slot therebetween, means for rotating the l rolls, independ ent means for adjusting: the rolls of the res pem tive sets relative to each othenfa-pivoted frame supporting said catch hopper and-Q'said" se ted: and third-mentioned rolls' and mean s f or ver e tically adjusting one end of the frame t Bimin- 

